Esempio
- 2
.
0
5
1
-4
1
6
-6
1
4
=
-2
.
0
-2
.
5
-2
.
1
-2
.
(-4)
-2
.
1
-2
.
6
-2
.
(-6)
-2
.
1
-2
.
4
=
0
-10
-2
8
-2
-12
12
-2
-8